Pseudoidium javanicum,a new species of powdery mildew on Acalypha spp. from Indonesia |
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Authors: | Jamjan Meeboon Iman Hidayat Susumu Takamatsu |
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Institution: | 1. Department of Bioresources, Graduate School, Mie University, 1577 Kurima-Machiya, Tsu 514-8507, Japan;2. Microbiology Division, Research Center for Biology, Indonesian Institute of Sciences-LIPI Jl, Raya Jakarta-Bogor KM 46, Cibinong, West Java 16911, Indonesia |
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Abstract: | Pseudoidium javanicum is proposed as a new species based on analyses of 28S, ITS and IGS rDNA sequences, and morphological data. This new species was found on Acalypha wilkesiana var. marginata, A. argentea, and A. cristata collected from Cibodas Botanical Garden, Bogor (West Java Province, Indonesia). Our analyses showed that all these specimens have identical rDNA sequences and similar morphological characteristics. They form a distinct clade separated from other species of Erysiphaceae. Pseudoidium javanicum differs from Erysiphe acalyphae by having shorter conidiophores and foot cells 1–3 times as long as the 0–2 following cells. The conidial size of Ps. javanicum is also smaller than that of E. jatrophae. |
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